Add tempest test for share access metadata

Depends-On: https://review.openstack.org/#/c/570708/
Change-Id: Ia794e1b13fec092b139c4859af48159869d6869e
Partially-implements bp: metadata-for-access-rule
diff --git a/manila_tempest_tests/common/constants.py b/manila_tempest_tests/common/constants.py
index 25cf4ee..c56712e 100644
--- a/manila_tempest_tests/common/constants.py
+++ b/manila_tempest_tests/common/constants.py
@@ -83,3 +83,5 @@
 SHARE_GROUP_TYPE_REQUIRED_KEYS = {
     'id', 'name', 'share_types', 'is_public', 'group_specs',
 }
+
+MIN_SHARE_ACCESS_METADATA_MICROVERSION = '2.45'